ME-MR Manual (64-0031 Rev D).indd

Owner’s Manual(for Revision 1.1 or higher)

ME-MRRemote Control

Disclaimer of LiabilityThe use of this manual and the conditions or methods of installation, operation, use, and maintenance of the ME-MR remote are beyond the control of Magnum Energy, Inc. Therefore, this company does not assume responsibility and expressly disclaims liability for loss, damage or expense, whether direct, indirect, consequential or incidental, arising out of or in any way connected with such installation, operation, use, or maintenance.Note as well that while every precaution has been taken to ensure the accuracy of the contents of this manual, the specifi cations and product functionality may change without notice. Magnum Energy, Inc. assumes no responsibility for errors or omissions.

Restrictions on UseThe ME-MR remote may only be used in life-support devices or systems with the express written approval of Magnum Energy. Failure of the ME-MR remote can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. If the ME-MR fails, it is reasonable to assume that the health of the user or other persons may be endangered.

Copyright NoticeCopyright © 2013 by Magnum Energy, Inc. All rights reserved. Permission to copy, distribute, and/or modify this document is prohibited without express written consent of Magnum Energy, Inc.

Document InformationDescription – ME-MR Owner’s ManualPart Number and Revision – 64-0031 Rev DDate Published – March 2013This manual is published without color for cost savings. However, this en-tire manual is available for download under the Document Library tab at http://www.magnumenergy.com —with many of the fi gures available in color.

Contact InformationMagnum Energy, Inc.2211 West Casino Rd.Everett, WA 98024Phone: 425-353-8833Fax: 425-353-8390Web: http://www.magnumenergy.com

Statement of AppreciationFrom all of us at Magnum Energy – Thank you for purchasing this ME-MR remote.We understand that you have many purchasing options in the marketplace, and are pleased that you have decided on a Magnum Energy product. This ME-MR remote was proudly assembled and tested in the United States in our Everett, Washington, facility.At Magnum we are committed to providing you with quality products and services, and hope that your experience with us is pleasant and professional.

Magnum Energy® is a registered trademark of Magnum Energy, Inc.

©2013 Magnum Energy, Inc. ii

Important Product Safety InstructionsThis manual contains safety instructions that must be followed during the installation and operation of this product. Read all instructions and safety information contained in this manual before installing or using this product.

Safety SymbolsTo reduce the risk of electrical shock, fi re, or other safety hazard, the fol-lowing safety symbols have been placed throughout this manual to indicate dangerous and important safety instructions.

WARNING: This symbol indicates that failure to take a specifi ed action could result in physical harm to the user.

CAUTION: This symbol indicates that failure to take a specifi ed action could result in damage to the equipment.

Info: This symbol indicates information that emphasizes or supple-ments important points of the main text.

Remedy: This symbol provides possible solutions for related is-sues.

Product Safety AlertsAll electrical work must be performed in accordance with local, state, and federal electrical codes.

WARNING:

• This product is designed for indoor/compartment installation. It must not be exposed to rain, snow, moisture, or liquids of any type.

• Use insulated tools to reduce the chance of electrical shock oraccidental short circuits.

• Remove all jewelry such as rings, watches, bracelets, etc., when installing or performing maintenance on the inverter.

• Always disconnect the batteries or energy source prior toinstalling or performing maintenance on the inverter. Live power may be present at more than one point since an in-verter utilizes both batteries and AC. Turning off the inverter may not reduce this risk on some Magnum inverters. As long as AC power is connected, it will pass thru the inverter regard-less of the power switch on the inverter or the ON/OFF button on the remote.

iii ©2013 Magnum Energy, Inc.

Table of Contents1.0 Introduction ............................................................... 12.0 Installation ................................................................ 2

2.1 Pre-Installation .................................................................... 22.1.1 Installation Guidelines ....................................................... 22.1.2 Unpacking and Inspection .................................................. 22.1.3 Tools Required .................................................................. 22.2 Installation Procedure ........................................................... 22.2.1 Flush Mounting the Remote ................................................ 32.2.2 Surface Mounting the Remote using the Bezel ....................... 32.2.3 Connecting the Remote ...................................................... 4

3.0 Setup ......................................................................... 53.1 Navigating the Remote.......................................................... 53.2 Remote Menu Items ............................................................. 63.2.1 AC IN Menu ...................................................................... 63.2.2 Search Watts Menu ........................................................... 73.2.3 Battery Amp-Hours Menu ................................................... 83.2.4 Battery Type Menu ...........................................................103.2.5 Charge Rate Menu ............................................................113.2.6 Low Battery Cut-Out (LBCO) Menu .....................................123.2.7 VAC Dropout Menu ...........................................................133.2.8 Power Save Menu .............................................................133.2.9 Equalize Menu .................................................................143.2.10 Charger Standby Menu .....................................................153.2.11 Power On Menu ...............................................................153.2.12 TECH Menu .....................................................................16

4.0 Menu Map: ME-MR Remote Control ........................... 185.0 Operation ................................................................. 19

5.1 Front Panel .........................................................................195.1.1 LED Indicators .................................................................195.1.2 LCD Display .....................................................................195.1.3 ME-MR Remote Buttons ....................................................195.2 Operating the Inverter/Charger .............................................205.3 System Status Messages ......................................................215.3.1 Inverter Mode Messages ...................................................215.3.2 Charger Mode Messages ....................................................225.3.3 Fault Mode Messages ........................................................275.3.3.1 System Fault Messages ..................................................275.3.3.3 Internal Fault Messages .................................................345.3.4 LED Indicator Guide .........................................................35

6.0 Troubleshooting ....................................................... 366.1 Troubleshooting Tips ............................................................376.1.1 Inverter Problems: ...........................................................376.1.2 Charger Problems: ...........................................................376.2 Performing an Inverter Reset ................................................386.3 Performing a Power Reset .....................................................38

7.0 Warranty and Service Information ........................... 397.1 Limited Warranty ................................................................397.1.1 How to Receive Repair Service ...............................................40

©2013 Magnum Energy, Inc. iv

List of Figures

Figure 1-1, Front Panel Features ..........................................................1Figure 2-1, Cut-Out Dimensions for Flush Mounted Remote .....................3Figure 2-2, Bezel Dimensions for Surface Mounted Remote .....................3Figure 2-3, Remote Control Connections ...............................................4Figure 3-1, Scrolling Home Screens .....................................................5Figure 3-2, AC IN Selections ...............................................................6Figure 3-3, Search Watts Selections .....................................................7Figure 3-4, Battery Amp-Hours Selections .............................................8Figure 3-5, Battery Type Selections .................................................... 10Figure 3-6, Charge Rate Selections .................................................... 11Figure 3-7, LBCO: Low Battery Cut-Out Selections ............................... 12Figure 3-8, VAC Dropout Selections .................................................... 13Figure 3-9, Power Saver Selections .................................................... 14Figure 3-10, Equalize Selections ........................................................ 14Figure 3-11, Charger Standby Selections ............................................ 15Figure 3-12, Power On Selections ...................................................... 16Figure 3-13, TECH Menus ................................................................. 17Figure 4-1, ME-MR Remote Menu Map ................................................ 18Figure 5-1, ME-MR Front Panel Controls and Indicators ......................... 19Figure 5-2, Inverter Standby Mode .................................................... 21Figure 5-3, Inverting Mode ............................................................... 21Figure 5-4, Off Mode ........................................................................ 22Figure 5-5, Searching Mode .............................................................. 22Figure 5-6, Absorb Charging Mode ..................................................... 22Figure 5-7, Bulk Charging Mode ......................................................... 23Figure 5-8, Charger Standby Mode ..................................................... 23Figure 5-9, Charging Mode ................................................................ 23Figure 5-10, Equalizing Mode ............................................................ 24Figure 5-11, Float Charging Mode ...................................................... 25Figure 5-12, Full Charge Mode ........................................................... 25Figure 5-13, Load Support AAC Mode ................................................. 25Figure 5-14, Load Support VDC Mode ................................................. 26Figure 5-15, Unknown Mode ............................................................. 26Figure 5-16, AC Overload Fault .......................................................... 27Figure 5-17, BackFeed Fault .............................................................. 27Figure 5-18, Breaker Tripped Fault ..................................................... 28Figure 5-19, Dead Battery Charge Fault .............................................. 28Figure 5-20, FET Overload Fault......................................................... 28Figure 5-21, High Battery Fault ......................................................... 29Figure 5-22, High Battery Temp Fault ................................................. 29Figure 5-23, High Volts AC Fault ........................................................ 30Figure 5-24, Low Battery Fault .......................................................... 30

v ©2013 Magnum Energy, Inc.

List of Tables

Table 3-1, Battery Amp-Hrs to Absorb Charging Time .............................8Table 3-2, Battery Size to Battery Amp-Hours (estimated) ......................9Table 3-3, Battery Type to Charge Voltages ......................................... 10Table 3-4, ME-MR’s Inverter/Charger Default Settings ........................... 17Table 5-1, LED Indicator Guide .......................................................... 35Table 6-1, Remote Troubleshooting .................................................... 36

List of Figures (Cont.)

Figure 5-25, No Communication ........................................................ 30Figure 5-26, Overcurrent Fault .......................................................... 31Figure 5-27, Overtemp Fault ............................................................. 31Figure 5-28, Stuck Relay Fault ........................................................... 32Figure 5-29, Tfmr Overtemp Fault ...................................................... 32Figure 5-30, Unknown Fault .............................................................. 32Figure 5-31, Stack Clock Fault ........................................................... 33Figure 5-32, Stack Mode Fault ........................................................... 33Figure 5-33, Stack Phase Fault .......................................................... 33Figure 5-34, Internal Bridge Fault ...................................................... 34Figure 5-35, Internal Charger Fault .................................................... 34Figure 5-36, Internal NTC Sensor Fault ............................................... 34Figure 5-37, Internal Relay Fault ....................................................... 35Figure 6-1, Performing an Inverter Reset ............................................ 38

©2013 Magnum Energy, Inc. 1

1.0 Introduction

1.0 IntroductionThe ME-MR remote control allows you to monitor and customize the basic operating parameters of your Magnum inverter/charger. This remote can be used on all Magnum inverter/charger models.

Info: The ME-MR remote control has minimal settings available from its menu. Careful consideration should be given to choosing this remote over the full featured ME-RC when customizing the inverter/charger for your particular system.

The ME-MR25 comes standard with a 25-foot, 4-conductor telephone cable and includes non-volatile memory (preserves adjustable settings, even if power to the remote or inverter is removed).

Info: This manual is for the ME-MR remote with revision 1.1 or higher. See Section 3.2.12 (TECH Menu) on page 16 for information on how to determine your revision level.

LCD DisplayLED

Indicators

SAVE/HOLD Button

ON/OFF/CHANGE Button

MENU/HOME Button

The ME-MR is equipped with the following features:• LED Indicators – The at-a-glance LEDs provide a quick indication of the inverter’s status, or notifi es you if a fault is present.• LCD Display – The LCD display is a 8 x 2 line (16 characters total), alphanumeric display used for setting up the inverter/charger operation, as well as viewing current status or fault messages.• ON/OFF or CHANGE Button – This button enables you to turn the inverter on and off, and also serves as a “change” button to navigate through the available settings for each menu.• MENU or HOME Button – This button accesses the remote’s menus. You can also return directly to the scrolling Home screens by pressing and holding this button for 2 seconds. See also Figure 3-1.• SAVE or HOLD Button – This button serves as a “save” button to retain your settings. This button also is used as a “hold” button to stop the Home screens from scrolling (press and hold the button for 2 seconds).

Figure 1-1, Front Panel Features

2 ©2013 Magnum Energy, Inc.

2.0 Installation

2.0 InstallationReview the Important Safety Instructions on page ii before proceeding with the installation of your remote.

WARNING: Installations should be performed by qualifi ed per-sonnel, such as a licensed or certifi ed electrician. The installer determines which safety codes apply, and ensures all applicable installation requirements are followed. Applicable installation codes vary depending on the specifi c location and application.

2.1 Pre-InstallationBefore proceeding, read the entire Installation section to determine how best to install your ME-MR remote. The more thorough you plan in the beginning, the better your inverter needs will be met.

2.1.1 Installation Guidelines• Before connecting any wires, determine the remote cable’s route through-

out the home or vehicle/boat both to and from the inverter.• Always check for existing electrical, plumbing, or other areas of potential

damage before drilling or cutting into walls to mount the remote.• Make sure all wires have a smooth bend radius and do not become kinked.• If installing this remote in a boat, RV or truck, ensure the conductors

passing through walls, bulkheads, or other structural members are protected to minimize insulation damage such as chafi ng, which can be caused by vibration or constant rubbing.

2.1.2 Unpacking and InspectionCarefully remove the ME-MR remote from its shipping container and inspect all contents. Verify the following items are included:• The ME-MR remote• 25’ remote cable

• Two #6 x ½” Phillips screws• ME-MR Owner’s Manual If items appear to be missing or damaged, contact your authorized Magnum dealer or Magnum Energy, Inc. Save your proof-of-purchase as a record of your ownership; it is needed if the unit should require in-warranty service.

2.1.3 Tools RequiredInstalling the remote control is simple and requires the following tools: • Phillips screwdriver • Level • Drill • Cut-out tool (knife/saw) • Pencil • Drill bit (7/64”)

2.2 Installation ProcedureSelect an appropriate location to install the ME-MR remote control. Allow ample room to access the remote’s buttons and to view the LEDs. Ensure the viewing angle of the display is appropriate. You can either fl ush mount (concealing the connection) or surface mount the remote.


2.0 Installation

Figure 2-1, Cut-Out Dimensions for Flush Mounted Remote

Figure 2-2, Bezel Dimensions for Surface Mounted Remote

2 ⅜"

1 ⅛"

1 ⅛"

2 11/16"

(6.03 cm)

(2.86 cm)2 ⅜"

(6.03 cm)

(2.86 cm)

(6.83 cm)

Side view Back view

1 ⅛"2 ⅛" (5.4 cm)

Bezel side viewBezel front view

(2.86 cm)3 ⅛" (7.94 cm)

2 ⅛

" (5

.4 c

m)

3 ⅛

" (7

.94 c

m)

2.2.1 Flush Mounting the RemoteAfter selecting the desired location for fl ush mounting the remote, cut out a square mounting hole measuring 2⅜” x 2⅜” (see Figure 2-1). Place the remote into the cutout, and then use the remote to mark and pre-drill two ⅛” holes for the two supplied #6 x ½” Phillips fl at head mounting screws.

2.2.2 Surface Mounting the Remote using the BezelAfter selecting the desired location for surface mounting the remote, use the bezel (not supplied) as a template to mark the mounting holes. Mark and pre-drill four ⅛” holes (see Figure 2-2). Mount the bezel using the four #6 x ¾” screws.


2.0 Installation

Figure 2-3, Remote Control Connections

BACK

RJ11 Connection

Magnum Inverter

Remote Cable

Remote Port (blue)

2.2.3 Connecting the Remote

CAUTION: When connecting battery power to the inverter, all battery negative connections must be connected prior to the battery posi-tive connections. When removing battery power from the inverter, the battery positive should be removed before any battery negative connections are disconnected. This prevents any communication chips/lines from becoming the DC return path to the battery—causing permanent damage to all connected accessories.Summation: Ensure all battery negative circuits are always con-nected before connecting or disconnecting battery positive.

1. Route the remote cable between the remote and the inverter/charger. This 25’ cable is a 4-wire telephony standard with RJ11 connectors on each end. A standard telephone cable (with 4 conductors) may be substituted if the provided remote cable cannot be used.

2. Connect the remote cable to the inverter/charger’s Remote port (blue label). Refer to Figure 2-3.

3. Connect the inverter to the batteries, but ensure the inverter is off and that no AC power is connected to the inverter.

4. While monitoring the front of the remote, connect the other end of the re-mote cable into the RJ11 jack on the back side of the remote (Figure 2-3).

5. Immediately upon connecting the remote cable the LEDs will illuminate as the unit goes through a self-test. After the initial self-test, text should appear with a system status message indicating the current state of the inverter/charger. If not, please refer to the Troubleshooting section.

6. Next, mount the remote to the desired surface or to the bezel (using the two supplied #6 x ½” Phillips fl at head screws). The remote is ready for setup.


3.0 Setup

3.0 SetupWhen the ME-MR remote is connected to a Magnum inverter/charger, the remote’s settings determine the inverter/charger’s operating parameters. The default settings in the remote (see Table 3-4) are adequate for most installations. However, you can change some of the operating parameters if needed. This section shows you how to navigate the remote, and gives you an understanding of the function of each adjustable setting.

3.1 Navigating the RemoteThe ME-MR has menu items and adjustable settings that provide the ability to confi gure your inverter/charger to your specifi c parameters.

Info: See Figure 4-1 for a complete map of the remote’s menu items and adjustable settings.

The items on the remote’s front panel are used to fi nd, adjust, and save the desired setting. They are:• LCD Display – The LCD display shows menu items, adjustable settings,

and the meter’s display information.

Info: The LCD display returns to the scrolling Home screens to show inverter status, DC voltage and current, and any fault present (if ap-plicable) after 30 seconds—if no buttons have been pressed.

Info: When the ”←” (left facing arrow) symbol is shown on the display, it indicates that the displayed setting has been selected and will be used.

• ON/OFF/CHANGE Button – Allows you to quickly scroll through and select various menu items and settings after pressing the MENU button.

• MENU/HOME Button – Allows easy access to the menu items that can help with confi guring, monitoring, and troubleshooting your inverter/charger. Press and hold this button (2 seconds) to return to the scrolling Home screens (Figure 3-1).

• SAVE/HOLD Button – Saves the menu item displayed on the screen. A saved setting is denoted by the arrow symbol. Press and hold this button (2 seconds) to stop the Home screens from scrolling (“HOLD” displays). Press once to view the next Home screen. Press and hold again (2 sec-onds) to resume scrolling of the Home screens (“SCROLL” displays).

STATUSInvert

FAULT ! Low Batt

BATTERY 11.4V

BATTERY - 0A

Note: Fault screen only appears if a fault has been detected

Battery Voltage

Battery Current

Inverter/Charger Status

Inverter/Charger Fault

Figure 3-1, Scrolling Home Screens


3.0 Setup

3.2 Remote Menu ItemsThis section covers the function of each menu item and explains what con-fi gurable settings are available from each menu.

3.2.1 AC IN MenuUse this menu as a quick means of changing your AC IN setting to coordinate with the circuit breaker rating from the incoming AC source.• AC IN – This selection ensures the inverter’s AC loads receive the maxi-

mum current available from the utility or your generator power. Whenever the utility or generator is connected to the inverter, the current used to power the AC loads and to charge the batteries is monitored. When the total current used to power the AC loads and charge the batteries begins to approach the AC IN setting, the current that was used for charging the batteries will automatically be reduced. This ensures the AC loads have all the available current when needed. The feature is not available on MM and MMS Series inverter/chargers.Default setting: AC IN = 30 AmpsRange: 5 Amps, 15 Amps, 30 Amps, 50 Amps

Where to set: Adjust the AC IN setting to match the current rating of the utility power or the generator’s circuit breaker. If using multiple AC sources (utility and generator) through an AC transfer switch, adjust this setting to the smaller AC breaker size. This setting is dependent on the stability of the AC source. If using a generator, factors such as altitude and output voltage regulation may require a lower setting than the generator’s breaker size. If the breaker on the AC source is tripping (because it is a weak breaker), try reducing this setting to the next lower level.Note: If the ME-MR is connected to a MSH-RE inverter, the AC IN setting applies to both inputs (AC1 and AC2).

CAUTION: The AC IN setting does not limit the current to the inverter loads. If the current to the loads on the output of the in-verter are greater than the circuit breaker rating on the incoming AC source, you may experience nuisance tripping of this breaker.

Bottom line shows current “saved” setting

If this setting is correct, press MENU button to

access different menu items

If a different setting is required:

press press press

To save the current setting displayed:

ON/OFF

CHANGE

MENUHOME

SAVEHOLD

AC IN30 Amps

AC IN30 Amps

AC IN 5 Amps

AC IN15 Amps

AC IN50 Amps

Figure 3-2, AC IN Selections


3.0 Setup

Figure 3-3, Search Watts Selections





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

SEARCH Off

SEARCH20 Watt

SEARCH5 Watt

SEARCH5 Watt

3.2.2 Search Watts Menu• SEARCH – This selection allows you to turn off the Search Watts feature,

or to adjust the power level to determine when the feature becomes active. If this feature is not needed, select SEARCH = Off. When the Search Watts feature is turned off, the inverter continuously provides full AC voltage to the loads.Default setting: SEARCH = 5 WattsRange: Off, 5 Watts, 20 Watts

Info: When the Search Watts feature is active “Search” appears on the bottom line of the LCD display, and the green INV LED will slowly fl ash.

What is the Search Watts feature? This feature is used to help save bat-tery power by reducing the inverter’s output to search pulses when there is no detectable load. If someone turns on a load greater than the wattage level setting while the inverter is searching, the inverter will start inverting to provide full voltage on its output.Should I use the Search Watts feature? If the inverter can spend a great deal of time searching (to reduce the power drain on your batteries) and you can tolerate small loads (less than 5 watts) from being on, then the Search Watts feature should be used. However, if you require some small loads (e.g., digital clocks, satellite receivers, answering machines, etc.,) to always be on, then this feature should be turned off (SEARCH = Off).Where to set: The SEARCH Watts setting should be adjusted to the same power level (or the next lower setting) of the smallest load that you want to run. If you don’t know the wattage of the smallest load you want to run, turn the switch for the load on and then decrease the SEARCH Watts setting until the load comes on and stays on.

Example: You have reviewed all the loads you want to run and deter-mined that the smallest load is a 20 watt light. Set SEARCH = 20 Watt. Whenever you turn on any load (because all the loads are greater than 20 watts), the inverter will stop searching and start inverting to deliver power to the load.

Info: Even though the Search Watts feature is on, some connected equipment may draw enough current even while off to keep the inverter in Invert mode.


3.0 Setup

3.2.3 Battery Amp-Hours Menu• BAT AHRS – This selection is used to select the approximate capacity

of the battery bank that is connected to the inverter (in battery amp-hours). This setting determines the time the battery charger is in the Absorb Charging stage (i.e., absorption time). See Table 3-1 to correlate the battery capacity to the absorption time.Default setting: BAT AHRS = 400 AHRange: 200 AH, 400 AH, 800 AH

Table 3-1, Battery Amp-Hrs to Absorb Charging Time

Battery Amp-Hours Selected Absorb Charging Time

Batt AmpHrs = 200 60 minutes



Where to set: Select the setting based on the 20-hour Amp-Hour (AH) capacity of your battery bank.How do I determine my battery AH capacity? The inverter requires deep cycle batteries, which are specifi cally made for continuous use. Deep cycle batteries are rated either by: a) amp-hours, or b) reserve capacity in minutes.• Amp-hour (AH) capacity is a measurement of how many amps a battery

can deliver for a specifi ed length of time (usually 20 hrs) until the voltage achieves 1.75 VDC/cell at 80° F.

• Reserve Capacity (RC) is a measure of how many minutes a battery can deliver a certain amount of current (usually 25A) while maintaining a voltage above 1.75 VDC/cell at 80° F.

Info: If using the Reserve Capacity (25A), the 20 hour AH capacity can be estimated by multiplying ‘reserve capacity’ by 50%.





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

BAT AHRS400 AH

BAT AHRS200 AH

BAT AHRS400 AH

BAT AHRS800 AH

Figure 3-4, Battery Amp-Hours Selections

Table 3-2 on the facing page provides an estimated 20 hour AH capacity based on the group/code size, physical size, and the voltage of the battery. If you are not sure of your battery’s 20 hour AH rating, consult your battery manufacturer/dealer or use Table 3-2 to obtain an estimate.


3.0 Setup

Table 3-2, Battery Size to Battery Amp-Hours (estimated)

Group/Code Size

Physical Size(L” x W” X H”)

BatteryVoltage

Battery AHrs (20 hour rate)

GC-2 (Golf Cart) 10 3/8 x 7 13/16 x 10 5/8 6V 220 AHrs

L16 11 11/16 x 7 x 16 11/16 6V 375 AHrs

Group 22 9 1/2 x 6 7/8 x 8 5/16 12V 55 AHrs

Group 24 10 1/4 x 6 13/16 x 8 7/8 12V 70 AHrs

Group 27 12 1/16 x 6 13/16 x 8 7/8 12V 95 AHrs

Group 31 13 x 6 13/16 x 9 7/16 12V 110 AHrs

4D 20 3/4 x 8 3/4 x 9 7/8 12V 200 AHrs

8D 20 3/4 x 11 1/8 x 9 7/8 12V 225 AHrs

Once you’ve determined the AH capacity of each battery, review how your batteries are connected (parallel or series) to determine the total amp-hour capacity of the battery bank.Parallel connectionWhen batteries are connected in parallel (positive to positive, negative to negative) they increase the amp-hour capacity of the battery bank, but the voltage remains the same.

Example: You have a 12-volt battery bank with three 12-volt batteries that are rated at 125 amp-hours (AH) each. Each of the positive terminals are connected together and each of the negative terminals are connected together, which means they are connected in parallel. The amp-hours of each battery connected in parallel are added together (125 AH + 125 AH + 125 AH = 375 AH), but the voltage of the battery bank stays the same (12 VDC).

Series connectionWhen batteries are connected in series (positive to negative) they increase the voltage of the battery bank, but the amp-hour rate remains the same.

Example: You have a 12-volt battery bank with two 6-volt batteries that are rated at 220 amp-hours (AH) each. The positive terminal of the fi rst battery is connected to the negative terminal of the second battery, which means these batteries are connected in series. Since the two 6-volt batteries are connected in series, the voltage of the batteries are added together to produce 12-volts (6 VDC + 6 VDC = 12 VDC), but the amp-hour capacity of the battery bank does not change (220 AH).

In battery banks where you have batteries connected in series and in parallel —the rules are the same. The batteries connected in series are referred to as a “series string” and the amp-hour capacity doesn’t change. Each series string is connected together in parallel to increase the amp-hour capacity. Add the amp-hour capacity of each series string connected in parallel to determine the total amp-hour capacity of the battery bank.


3.0 Setup

3.2.4 Battery Type Menu• BAT TYPE – This menu is used to select the battery type, which

determines the battery charge profi le and ensures the batteries are receiving the proper charge voltage. The fi xed voltage options are: GEL (for Gel batteries), Flooded (for liquid lead acid batteries), AGM 1 (for Lifeline AGM batteries), and AGM 2 (for East Penn/Deka/Discover/Trojan AGM batteries). Refer to Table 3-3 to determine the specifi c charge voltage based on the battery type selected.Default setting: BAT TYPE = Flooded

Info: The voltage settings shown in Table 3-3 are based on the Battery Temperature Sensor (BTS) being disconnected, or at a temperature of 77° F (25° C). If the BTS is connected, the actual charge voltage increases if the temperature around the BTS is colder than 77° F (25° C), and decreases if hotter than 77° F (25° C). This ensures the batteries receive the correct charge voltage even if they become cold or hot.

Table 3-3, Battery Type to Charge Voltages

Battery Type

Inverter Voltage

Absorption Voltage

FloatVoltage

Equalization Voltage

GEL12 VDC 14.1 VDC 13.6 VDC 14.1 VDC1

24 VDC 28.2 VDC 27.2 VDC 28.2 VDC1

48 VDC 56.4 VDC 54.4 VDC 56.4 VDC1

Flooded12 VDC 14.6 VDC 13.4 VDC 15.5 VDC24 VDC 29.2 VDC 26.8 VDC 31.0 VDC48 VDC 58.4 VDC 53.6 VDC 62.0 VDC

AGM 12

12 VDC 14.3 VDC 13.1 VDC 15.5 VDC24 VDC 28.6 VDC 26.2 VDC 31.0 VDC48 VDC 57.2 VDC 52.4 VDC 62.0 VDC

AGM 23

12 VDC 14.5 VDC 13.5 VDC 14.5 VDC1

24 VDC 29.0 VDC 27.0 VDC 29.0 VDC1

48 VDC 58.0 VDC 54.0 VDC 58.0 VDC1

Note 1: Voltage same as absorption voltage – to prevent equalization.Note 2: Specifi cations for Concord (Lifeline Series) AGM batteries.Note 3: Specifi cations for East Penn, Deka, Discover and Trojan AGM batteries.

Figure 3-5, Battery Type Selections





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

BAT TYPE GEL

BAT TYPEFlooded

BAT TYPE AGM 1

BAT TYPEFlooded

BAT TYPE AGM 2


3.0 Setup

3.2.5 Charge Rate Menu• CHG RATE – This selection is used to set the maximum charge rate

allowed to charge the batteries during Bulk, Absorption, Float, and Equalize charging. The CHG RATE = 10% setting is available to help minimize charging, while continuing to allow pass-through power.Default setting: CHG RATE = 100%Range: 10%, 50%, 100%

The charge rate selections are provided as a percentage of the inverter/charger’s maximum charging capability. Refer to the label on the side of the inverter or to the inverter/charger owner’s manual to determine its maximum charge rate. Once you fi nd this maximum charge rate, determine the percentage needed to limit the charge rate to your battery bank.

Example: If the maximum charge rate of your inverter/charger is 100 amps and you need to limit the charge rate to 50 amps, choose the CHG RATE = 50% selection (50 amps = 50% of 100 amps).

Info: The topology of the Magnum inverter when connected to an AC source overrides the setting, and starts charging if the battery voltage is <12 VDC (12-volt models), <24 VDC (24-volt models) or <48 VDC (48-volt models).

Where to set: The maximum charge rate is generally set to a C/5* rate (C = the total amp-hour capacity of the battery bank—using the 20 hour AH rate). The C/5 rate is usually used when the objective is to charge the batteries as quickly as possible (i.e., 400 AH ÷ 5 = 80 amp maximum charge rate). A lower rate such as C/20* is used when the batteries need to be charged as slow as possible. The ME-MR provides three settings for charge rate adjustment—10, 50, and 100%. Multiply this percentage and the max charge rate of the inverter to fi nd the closest setting to the desired charger output.

CAUTION: The C/5 or C/20 charge rate settings are guidelines; they are not requirements on how you should set your battery charge rate. For specifi c charge rate requirements, refer to your battery manufacturer.

Info: If multiple inverter/chargers are used on a single battery bank, you must ensure that the total charge rate from all inverter/chargers is limited to the max charge rate needed for your battery bank. This setting only limits the charging on each inverter/charger individually, not on all inverter/chargers.

* C/5 or C/20 rate – Charge rates are commonly expressed as a ratio of the total amp-hour (AH) capacity of the battery bank. For example, with a 400 AH battery bank (C = 400), the C/5 charge rate is 80 A (400/5 = 80 A).





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

CHG RATE 100%

CHG RATE 10%

CHG RATE 100%

CHG RATE 50%

Figure 3-6, Charge Rate Selections


3.0 Setup

3.2.6 Low Battery Cut-Out (LBCO) Menu• LBCO – This menu is used to set the DC voltage level that turns off

the inverter to help protect the batteries from over-discharge damage. Selections are from 9 VDC to 11 VDC (12-volt inverter models), 18 VDC to 22 VDC (24-volt inverter models), or 36 VDC to 44 VDC (48-volt inverter models). If the battery voltage drops below the LBCO selected setpoint continuously for more than one minute, the FAULT LED will come on, the inverter will turn off, and the display shows “FAULT! Low Bat” (low battery status). If the battery voltage falls below 8.5 volts (12-volt models), 17.0 volts (24-volt models) or 34.0 (48-volt models), the FAULT LED and Low Bat status will be immediate.Default settings: LBCO = 10 VDC (12-volt models), 20 VDC (24-volt models) or 40 VDC (48-volt models).Range: 9 VDC, 10 VDC, 11 VDC (12-volt models, x2 for 24v, x4 for 48v)

Info: The inverter will automatically begin to start inverting when the DC voltage increases to ≥ 12.5 VDC (12-volt models), ≥ 25.0 VDC (24-volt models) or ≥ 50.0 VDC (48-volt models). If AC power is available and connected to the inverter’s input the inverter will automatically clear the Low Battery fault, pass the input AC power to the output, and begin charging the batteries.

Where to set: To cycle the batteries slightly but not discharge them more than 20%*, the LBCO setting should be set to 11 VDC (12-volt models), 22 VDC (24-volt models) or to 44 VDC (48-volt models). In some applications, such as installations in an off-grid home or when doing a lot of dry-camping in your RV, you may want to cycle down to 25%* by setting the LBCO to 10 VDC (12-volt models), 20 VDC (24-volt models) or to 40 VDC (48-volt models). In extreme circumstances, you have the ability to discharge the batteries to 80%* by setting the LBCO to 9 VDC (12-volt models), 18 VDC (24-volt models), or to 36 VDC (48-volt models) before recharging.

* These discharge percentages are rough estimates; for accurate battery monitoring, a battery monitor such as Magnum’s ME-BMK and the ME-RC remote is required.

Info: The inverter will automatically begin to start inverting when the DC voltage increases to ≥ 12.5 VDC (12-volt models), ≥ 25.0 VDC (24-volt models) or to ≥ 50.0 VDC (48-volt models). If AC power is available and connected to the inverter’s input, the inverter will automatically clear the Low Battery fault, pass the input AC power to the output, and begin charging the batteries.





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

LBCO10 VDC

LBCO10 VDC

LBCO 9 VDC

LBCO11 VDC

Note: Values shown are for a 12-volt inverter

Figure 3-7, LBCO: Low Battery Cut-Out Selections


3.0 Setup

3.2.7 VAC Dropout Menu• VAC DROP – This selection is used to set the minimum AC voltage that

must be present on the input before the inverter/charger switches from Invert to Charge mode. For example, if this setting is set to VAC DROP = 60 VAC, then the AC input voltage must be above 60 volts before the inverter will switch from Invert mode to Charge mode. This setting also determines the minimum AC voltage threshold where the inverter/char-ger transfers from the AC input (utility/shore or generator) and begins inverting. This protects AC loads from utility outages.Default setting: VAC DROP = 80 VAC for North American units; 150 VAC for export models.Range: 60 VAC, 80 VAC, and 100 VAC for 120v units (North America); and 110 VAC, 150 VAC, and 190 VAC for 230v units (for export)

Where to set: It depends on the application and what you are using as the AC source. The settings not only look at the incoming voltage to determine when to transfer, but they also determine the response sensitivity to incoming voltage fl uctuations. Use the 100 VAC dropout setting when the AC source is well regulated and you are operating devices that are sensitive to voltage fl uctuations. Use the 80 VAC or lower setting (60 VAC) when the AC source may have signifi cant fl uctuations in RMS voltage. These settings are highly recommended if using a generator for charging.Note: If the ME-MR is connected to a MSH-RE inverter, the VAC Dropout setting applies to both inputs (AC1 and AC2).

Figure 3-8, VAC Dropout Selections





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

VAC DROP 80 VAC

VAC DROP 80 VAC

VAC DROP100 VAC

VAC DROP 80 VAC

3.2.8 Power Save Menu• PWR SAVE – This setting allows you to turn the Power Save feature

on or off.Default setting: PWR SAVE = OnRange: On, Off

What is the Power Saver feature? The Power Saver feature causes the LCD backlight and LEDs on the remote display to turn off to conserve energy. The remote goes into Power Saver mode if there has not been a button press or fault message for 15 minutes. Whenever the remote goes into the Power Saver mode, the LCD backlight and LEDs can be reactivated by pressing any button on the remote.


3.0 Setup

If you have a fault during the Power Saver mode, the LCD backlight, and the FAULT LED will come on and stay on as long as the fault is detected. If you want the LCD backlight and LEDs to always be on, select PWR SAVE = Off.





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

PWR SAVE On

PWR SAVE Off

PWR SAVE On

3.2.9 Equalize Menu• EQUALIZE – This menu allows you to equalize the batteries after a Float

Charge is achieved. Equalizing should only be attempted by experienced users.Default setting: EQUALIZE = DisabledRange: Disabled, Request, EQing

What is equalizing? Equalizing is a controlled overcharge of the batteries. During this process, there will be excessive gassing of the batteries. This condition is not only corrosive, but can also be dangerous as hydrogen gasses are emitted during the charging process.

WARNING: Only equalize in well ventilated areas. Consult your battery’s manufacturer for recommendations on equalizing.

Info: Equalization can only be accomplished when the charger status is “FLOAT” or “Full Chg”.

Info: Equalization charging is not available if either GEL or AGM 2 is selected from the Battery Type menu.




To start equalization:

press press

ON/OFF

CHANGE

MENUHOME

EQUALIZEDisabled

EQUALIZEDisabled

EQUALIZE EQing

EQUALIZE Request

Figure 3-9, Power Saver Selections

Figure 3-10, Equalize Selections


3.0 Setup

3.2.10 Charger Standby Menu• CHARGER – Select whether to activate Charger Standby mode after

AC power is connected (charger ready and waiting for AC input).Default setting: CHARGER = No AC InRange: No AC In, Chg Stby

What is Charger Standby? When the charger is in Charger Standby, the incoming AC is still available on the inverter’s output, but the charger is not allowed to charge.

Info: To resume charging, access the Charger Standby menu and press the CHANGE button.

Info: If upon accessing this menu “No AC In” displays, you will not be able to change the Charger’s status.

Bottom line shows current charger status

This status will not change until AC is connected

If a different status is required:

press press to change status

ON/OFF

CHANGE

MENUHOME

CHARGER Absorb

CHARGER Status

CHARGERChg Stby

Possible statuses:Absorb, Bulk, Charging, Equalizing (EQing), Float, Full Charge (Full Chg), Load Support AAC (LS AAC), Load Support VDC (LS VDC)

Figure 3-11, Charger Standby Selections

3.2.11 Power On Menu• POWER ON – Select whether to have the inverter power up and provide

AC power automatically once DC voltage is connected to it.Default: POWER ON = NormRange: Norm (Normal), Always

What is the Power On feature? Normally, when DC power is connected to the inverter, the user is required to press the power button—on the inverter or remote—to turn the inverter on (Norm). When the Power On feature is activated by selecting Always, the inverter is automatically turned on and starts searching or inverting—depending on the Search Watts setting (see Section 3.2.2). Once the inverter has connected to DC power and is automatically turned on, the power button—on the inverter or remote—can be used to turn the inverter on or off.Why use the Power On feature? Some customers are familiar with Uninterruptible Power Supplies (UPS) that power-up automatically when DC power is connected. The Power On feature can be used by customers that want to obtain the same automatic power-up feature with which they are familiar.


3.0 Setup

3.2.12 TECH Menu• TECH – This menu provides access to read only system information

that can assist service technicians in troubleshooting. It also offers a selection that enables you to return all system settings to the original factory default values, and another that locks some setup menus.

Scroll to the end of the remote’s menus until “TECH, Press ON” appears. Press the ON/OFF CHANGE button to access these selections. Continue to press the ON/OFF CHANGE button to view each TECH menu item.

Bat Temp: Displays the temperature of the battery temperature sensor (BTS)—if connected.

Xfm Temp: Displays the temperature of the inverter’s transformer. FET Temp: Displays the temperature of the FETs (Field Effect Transistors). Inverter Rev: Displays the fi rmware revision level of the inverter. Remote Rev: Displays the fi rmware revision level of the remote. Model: Displays the model number of the connected inverter.

Info: If “Model Unknown” displays, the remote is unable to determine the inverter model. This may be due to an inverter revision newer than the remote. All remote menu selections/features that are avail-able in the inverter will function normally.

Ext Ctrl: Magnum has an open protocol policy that allows certain functions (AC In, Charge Rate, & VAC Dropout settings) of the inverter/charger to be controlled externally—such as with a third party communications device.No – there is no external device controlling any of the inverter’s settings.INT – an external device is controlling the setting—however, the external device has not changed the setting at this time.EXT – an external device is controlling the setting—and, the external device has changed the setting.When an external device is connected, the above menus scroll across the bottom line of the display. The INT or EXT display denotes whether the setting has been changed. Example: AC IN INT...CHR% INT...VAC EXT. An external device is connected, the AC IN and Charge Rate settings have not been changed, but the VAC Dropout setting has been changed.

SETUP: Allows you to Lock or Unlock the setup menus on your remote. Press the SAVE/HOLD button to select to lock the setup menus (Lock) or to unlock (Unlock) the setup menus.Note: Exception - AC In menu does not lock.





press press press


ON/OFF

CHANGE

MENUHOME

SAVEHOLD

POWER ON Norm

POWER ON Always

POWER ON Norm

Figure 3-12, Power On Selections


3.0 Setup

Table 3-4, ME-MR’s Inverter/Charger Default Settings

Menu Default Setting

AC In AC IN = 30 Amps

Search Watts SEARCH = 5 Watt

Battery Amp-Hours BAT AHRS = 400 AH(Absorb Time = 90 min.)

Battery Type BAT TYPE = Flooded

Charge Rate CHG RATE = 100%

Low Battery Cut OutLBCO = 10 VDC (12-volt models),

20 VDC (24-volt models),40 VDC (48-volt models)

Low VAC Dropout VAC DROP = 80 VAC (150 VAC for export)

Power Save PWR SAVE = On (15 min.)

Equalize EQUALIZE = Disabled

Charger StandbyCHARGER = No AC In

(Charger Standby is off, will automatically charge when AC is connected)

Power On POWER ON = Norm

TECH: SETUP SETUP = Unlock

Defaults: This menu restores all settings on the ME-MR (and in the in-verter/charger) to the original factory default settings. To restore, press and hold the SAVE/HOLD button for 5 seconds (see Figure 4-1). After the default settings have been restored, the display will show “Loaded”. The ME-MR factory defaults are listed in Table 3-4.

Figure 3-13, TECH Menus

Press the ON/OFF button to to view TECH menus

TECH menus are “read only” displays, no changes can be made to these screens*/**

To scroll next screen:

press press

ON/OFF

CHANGE

MENUHOME

* Press and hold the SAVE/HOLD button to restore defaults **Press the SAVE/HOLD button to select Lock or Unlock

TECHPress ON

Bat Temp xx C

Xfm Temp xx C

FET Temp xx C

InverterRev x.x

Modelxxxxxx

Ext CtrlNo

SETUP**Lock

RemoteRev 1.1

Defaults*5.0 secs


4.0 Menu Map

Figure 4-1, ME-MR Remote Menu Map

4.0 Menu Map: ME-MR Remote ControlThis menu map is an overview of the inverter/charger settings (arrows denote factory defaults) and the info displays available from the ME-MR remote.

AC IN 15 Amps

MENUHOME

Range: 24v = 18VDC, 20VDC, 22VDC48v = 36VDC, 40VDC, 44VDC

Note: Upon accessing this menu, if “No AC In” displays, you cannot put into Charger Standby.

Note: Upon accessing this menu, the charger must be in Float or Full Charge status to equalize.

Export models: Range: 110VAC, 150VAC, 190VAC Default: 150VAC

AC IN 5 Amps

AC IN15 Amps

AC IN30 Amps

AC IN50 Amps

SEARCH Off

SEARCH 5 Watt

SEARCH20 Watt

BAT AHRS 200 AH

BAT AHRS 400 AH

BAT AHRS 800 AH

BAT TYPE GEL

BAT TYPEFlooded

BAT TYPE AGM 1

BAT TYPE AGM 2

CHG Rate 10%

CHG Rate 50%

CHG Rate 100%

LBCO 9 VDC

LBCO10 VDC

LBCO11 VDC

VAC DROP 60 VAC

VAC DROP 80 VAC

VAC DROP100 VAC

PWR SAVE Off

PWR SAVE On

EQUALIZEDisabled

EQUALIZERequest

EQUALIZEEQing

CHARGER Status

CHARGERChg Stby

POWER ONNorm

POWER ON Always

TECHPress ON

Bat Temp XX C

Xfm Temp XX C

FET Temp XX C

InverterRev X.X

RemoteRev 1.1

ModelXXXXXX

Ext CtrlNo

SETUPUnlock

Defaults5.0 secs

SETUP Lock

DefaultsLoaded


5.0 Operation

5.0 OperationThis section gives a brief overview of the ME-MR remote’s LED indicators, LCD display, and available buttons. It also covers how to operate an inverter/charger using the remote, and the various status and fault messages that may display during operation.

5.1 Front PanelThe ME-MR front panel contains two LEDs and a LCD display for viewing system status, and three buttons to control system operation.

5.1.1 LED IndicatorsThe two LED indicators on the front panel illuminate solid or blink to indicate the inverter/charger’s status. When the remote is fi rst powered up, both LEDs come on as it goes through a self-test. Once the self-test is complete, the LEDs and the LCD display provide the operating status of the inverter/charger. See Section 5.3.4 for the LED Indicator Guide.

5.1.2 LCD DisplayThe LCD display is used for setting up the system operation as well as viewing the current operating status—or any fault condition that may occur. This display has two lines of alphanumeric characters and features a backlight that can be set to turn off to conserve power. The top and bottom lines display the inverter/charger’s status, setup menus, and any TECH read only information. When the remote is powered up, the display automatically scrolls through the Home screens showing the inverter/charger status and the battery voltage and current (see Figure 3-1).

Figure 5-1, ME-MR Front Panel Controls and Indicators

LCD DisplayLED

Indicators

SAVE/HOLD Button

ON/OFF/CHANGE Button

MENU/HOME Button

5.1.3 ME-MR Remote ButtonsON/OFF ButtonThis button toggles the inverter function on and off. The green INV LED turns on and off with the button.MENU ButtonThis button provides quick access to menu items that can help with confi guring, monitoring, and troubleshooting your inverter/charger.SAVE ButtonThis button saves the changes to settings selected in the remote’s menus.


5.0 Operation

CHANGE ButtonThis button scrolls through the selections available under each menu heading. Each menu restarts if you missed the desired selections, so if a selection is bypassed simply continue to press the MENU button until the desired selec-tion reappears.HOME ButtonHold down the HOME button for two seconds to return to the Home screens.

Info: The MENU/HOME button can be used to reset the remote by pressing and holding it down for 10 seconds. This is useful if the display shows unrecognizable letters or symbols.

HOLD ButtonHold down this button for two seconds to stop the Home screens from scroll-ing. Hold down again to restart the scrolling of the Home screens.

Info: All adjustable inverter/charger settings in the ME-MR are saved in non-volatile memory and are preserved until changed—even if an inverter reset is performed (see Section 6.2), or if all power to the remote or inverter is removed.

Info: The ME-MR remote is only used to control an inverter. In order to control or display a Magnum Energy accessory, you need to use a ME-RC50 or ME-ARC50 remote control. Please refer to the particular remote control owner’s manual on the Magnum Energy website at www.magnumenergy.com for further information on displaying accessories.

5.2 Operating the Inverter/ChargerTurning the inverter on – Press the ON/OFF button to activate the inverter. The inverter will either search for a load—using very little power from the bat-teries—if in Search mode (see Figure 5-5), or will be actively inverting—using power from the batteries to power the AC loads (see Figure 5-3). The green INV LED is on when the inverter is actively inverting, and fl ashes when searching.Turning the inverter off – While the inverter is actively inverting or search-ing, the ON/OFF button can be pressed to switch the inverter function off, and this will turn the green INV LED off (see Figure 5-4).Inverter Standby – The inverter is in standby when it is active (green INV LED is on) and the remote shows a charge status due to an external AC power source (utility/shore or generator) passing through the inverter to power the AC loads. During normal operation, the AC loads are powered by the external AC power source. However, if a blackout or brownout condition occurs the inverter senses these conditions, transfers to Inverter mode, and then powers the AC loads connected to the inverter.

CAUTION: If you have critical loads and are in Inverter Standby, do not press the ON/OFF button to turn the inverter off. If the green INV LED is off, inverter power will NOT be available to run your critical loads should the external AC power be interrupted.

Equalize charging – Equalizing is a controlled overcharge performed after your fl ooded (or AGM1 type) batteries have been fully charged. It mixes the battery electrolyte (to reverse stratifi cation) and removes sulfation that may have built up on the plates. These conditions, if left unchecked, reduce the overall capacity of the battery.


5.0 Operation

WARNING: Do not perform an equalization charge without reading and following all safety precautions pertaining to charging/equal-ization—as noted in this manual (see page 24) and in the inverter owner’s manual.

5.3 System Status MessagesThe remote control uses the bottom line of the LCD display to show the inverter/charger’s operation by displaying a status message. This section will review the inverter/charger’s operating modes and the available status messages under each mode. Use these messages along with the status LEDs to determine the inverter/charger’s current operating status, and to assist in troubleshooting the system if a fault occurs.There are three operating modes of the inverter/charger:

• Inverter Mode • Charger Mode • Fault Mode

5.3.1 Inverter Mode MessagesThe inverter/charger is in Inverter mode when connected to a battery bank and AC power (shorepower/utility or generator) is not available, or is unacceptable to the inverter/charger’s input. The Inverter mode messages are Inverter Standby, Inverting, Off, and Searching.

STATUS Invert

Invert appears on the LCD. The INV (green) LED is on solid. The FAULT (red) LED is off.

Figure 5-3, Inverting Mode

• Inverting Mode – The inverter is providing AC voltage on its output by inverting power from the batteries.

STATUSInv Stby

Inv Stby appears on the LCD. The INV (green) LED is on solid. The FAULT (red) LED is off.

Figure 5-2, Inverter Standby Mode

• Inverter Standby Mode – The inverter is on but not actively providing power. However, the inverter remains active and external AC power (utility or generator) is passing through the inverter to power the AC loads.


5.0 Operation

5.3.2 Charger Mode MessagesWhen AC power (utility or generator) is connected to the inverter/charger, it begins to monitor the AC input for acceptable voltage. Once the AC input is accepted, the AC transfer relay (inside the inverter) closes and Charge mode begins. There are several Charge mode messages; view the LCD display and the corresponding message in this section to identify and understand the particular Charge mode.

Info: The AC input becomes acceptable after a minimum 10-second delay, and when the voltage is greater than the VAC Dropout setting.

• Absorb Charging Mode – The Absorb stage is the constant voltage stage and begins when the absorb voltage is reached (determined by the Battery Type setting) while Bulk Charging. During this stage, the DC charging current decreases as the battery becomes charged. This Charge stage continues until the absorb charging time (determined by the Battery Amp-Hours setting) is fi nished.

Absorb appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off. STATUS

Absorb

Figure 5-6, Absorb Charging Mode

• Searching Mode – When the inverter is in Search mode, the AC loads on the inverter output are less than the Search Watts setting. The Search mode function is used to reduce the inverter draw from the battery, and may be turned off whenever you want full inverter output voltage available at all times.

STATUS Search

Search appears on the LCD. The INV (green) LED slowly fl ashes. The FAULT LED (red) is off.

Figure 5-5, Searching Mode

STATUS Off

• Off Mode – This message tells you that there is no AC available on the inverter’s AC output. The inverter function is off.

Figure 5-4, Off Mode

Off appears on the LCD. All LEDs are off.


5.0 Operation

Bulk appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off. STATUS

Bulk

Figure 5-7, Bulk Charging Mode

• Bulk Charging Mode – The battery charger is delivering maximum current (determined by the Charge Rate setting) to the batteries. The charger remains in Bulk Charge until the absorb voltage (determined by the Battery Type setting) is reached.

CHARGERChg Stby

Chg Stby appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off.

Figure 5-8, Charger Standby Mode

• Charger Standby Mode – The charger is disabled to prevent any charging, but the AC power to the AC input is still available on the AC output.

Info: Press the CHANGE button to turn the charger on. See Section 3.2.10 for more information on Charger Standby.

STATUSCharging

Charging appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off.

Figure 5-9, Charging Mode

• Charging Mode – Once Charge mode has been enabled, the unit waits and displays “Charging” to determine the charge routine. If the DC voltage is low (≤12.8 VDC/12-volt models, ≤25.6 VDC/24-volt models, or ≤51.2 VDC/48-volt models), the charger initiates Bulk Charging. If the DC voltage is higher than this voltage, the charger skips the Bulk and Absorb Charging stages and goes directly to Float Charging.


5.0 Operation

• Equalizing Mode – The battery charger is delivering the equalize voltage to the batteries. Refer to Table 3-3 to determine the equalize voltage.Equalization charging can only be enabled while the charger is in Float Charge or in Battery Saver™ mode. To turn on Equalize Charging, ensure the LCD display reads “Float” or “Full Chg”, press the MENU button until you see the “EQUALIZE Disabled” menu, and then press the CHANGE button. The display quickly reads “EQUALIZE Request”, and then “EQUALIZE EQing.” The Equalize Charge continues for four hours, and then automatically stops and returns to Float Charging. The Equalize Charge can be manually stopped by pressing the MENU button until you see the “EQUALIZE EQing” menu, and then pressing the CHANGE button. The display will read “EQUALIZE Disabled”.During equalization, the batteries begin gassing and bubbling vigorously (which consumes water). Ensure that each cell has adequate distilled water levels prior to equalizing, and be sure to add water as needed after equalizing.How often should I equalize? Some experts recommend heavily used batteries should be equalized anywhere from x1/mo. to 1-2x/year. Others only recommend it when the cells have a low specifi c gravity, or when the difference between any individual cell has a specifi c gravity reading greater than .015 after being fully charged.How long should I equalize? While the batteries are gassing, monitor the specifi c gravity readings every hour. When the specifi c gravity readings no longer increase, the Equalization Charge is complete and should be stopped.

WARNING: Equalizing produces hydrogen and oxygen gas. Ensure the battery compartment has adequate ventilation in order to dis-sipate this gas to avoid explosions.

CAUTION: Ensure your batteries can be equalized. Performing an EQ charge on batteries other than liquid lead acid or certain AGM types could damage them. Refer to your battery manufacturer/dealer for instructions on how to properly equalize your batteries.

CAUTION: Ensure the DC loads will not be damaged by the higher voltage applied to the batteries during equalization. If in doubt, disconnect the DC loads to prevent damage.

Info: Equalization is not available if GEL or AGM 2 is selected from the Battery Type menu.

EQing appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off. STATUS

EQing

Figure 5-10, Equalizing Mode


5.0 Operation

• Float Charging Mode – At the end of the Absorb Charging stage, the charger reduces the charge voltage and tries to maintain the batteries at the Float Charge voltage setting—which is determined by the Battery Type setting. See Table 3-3.

Info: If the battery voltage falls ≤12.1 VDC (12-volt models), ≤24.2 VDC (24-volt models) or ≤48.4 VDC (48-volt models), the unit will begin Bulk Charging.

STATUS Float

Figure 5-11, Float Charging Mode

Float appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off.

• Full Charge Mode – This status indicates that you have entered the Battery Saver™ mode. This mode maintains the batteries without overcharging, thus preventing excessive loss of water in fl ooded batteries or drying out of GEL/AGM batteries. After 4 hours Float Charging, the charger turns off and “Full Chg” displays (charger is now in Battery Saver™ mode). If the battery voltage drops to ≤12.6 (12-volt models), ≤25.2 (24-volt models) or ≤50.4 (48-volt models), the charger automatically initiates another 4 hours of Float Charging. This cycle helps to ensure the batteries are monitored and maintained, and continues as long as AC power is continuously connected to the AC input.

Figure 5-12, Full Charge Mode

STATUSFull Chg

Full Chg appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off.

STATUS LS AAC

LS AAC appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED is on.

Figure 5-13, Load Support AAC Mode

• Load Support AAC Mode – The inverter is in Load Support (amps AC) mode because the inverter load is requiring more power than the incoming AC source can provide on its own. The inverter pulls the additional current—needed for the loads—from the batteries to keep the incoming AC current from exceeding the AC IN setting.


5.0 Operation

• Unknown Mode XX – The remote doesn’t recognize the mode the inverter is reporting. Contact Magnum Technical Support (425-353-8833) for assistance.

Figure 5-15, Unknown Mode

Mode XX appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED could be on or off.

STATUSMode XX

STATUS LS VDC

Figure 5-14, Load Support VDC Mode

LS VDC appears on the LCD. The FAULT (red) LED is off, and the INV (green) LED is on.

• Load Support VDC Mode – The inverter/charger is in Load Support (Volts DC) mode because an external DC source (solar, wind, etc.,) is providing more current than needed—which causes the battery voltage to rise. The inverter/charger reduces the incoming AC current in an effort to keep the battery voltage from rising above the temperature-compensated Battery Type setting.

Info: The Load Support VDC feature operates in parallel with the AC input to support the inverter loads and is only available on MSH Series inverter/chargers. This feature is only active in Bulk, Absorb, Float or EQ Charge modes and when the inverter is enabled (INV LED is on); it is deactivated if the charger is in Charger Standby.

Info: The Load Support feature operates in parallel with the AC input to support the inverter loads and is only available on MSH Series inverter/chargers. It is only active when the inverter is enabled (INV LED is on).

Info: When the inverter is in Inverter Standby mode (charging and pass-thru), the current is normally a positive value. However, in Load Support AAC mode, the inverter amps reading is a negative number to indicate how much current is being provided/removed from the inverter batteries. The inverter batteries will continue to provide current to as-sist the AC input current until the battery reaches 0.5 volts (12-volts systems), 1.0 volts (24-volt systems), or 2.0 volts (48-volt systems) above the LBCO setting.


5.0 Operation

5.3.3 Fault Mode MessagesWhen an abnormal condition is detected, the FAULT LED comes on and a fault status is displayed. View the LCD display and use the information in this sec-tion to identify and correct the issue.

Info: Many faults automatically restart once cleared. Some require either a manual restart or an inverter reset. See Section 6.2.

5.3.3.1 System Fault MessagesThese fault messages are usually caused by some external issue that directly affects the inverter/charger system.

FAULT !AC Ovrld

AC Ovrld appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-16, AC Overload Fault

• AC Overload Fault – The AC load on the inverter/charger’s output exceeds the inverter’s AC current protection limits. If the overload condition lasts for less than 10 seconds, the unit automatically restarts and resumes operation. However, if the overload occurs for longer than 10 seconds, the unit shuts down and requires a manual restart.

Remedy: This fault occurs because: the connected AC loads are larger than the inverter’s output capacity, there is a wiring short on the output, or the output wires are incorrectly installed. Once the AC loads are reduced or the output wiring is corrected, the inverter can be restarted after a manual restart has been accomplished.

FAULT !Backfeed

BackFeed appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-17, BackFeed Fault

• BackFeed Fault - The inverter shuts down because AC voltage from an external AC source has been detected on the inverter’s AC output. When the unit shuts down because of this fault condition, an inverter reset is required in order to resume operation (see Section 6.2 to reset the inverter).

Remedy: This fault usually occurs because the AC output wiring is connected to (or able to be connected to) the incoming AC source. When this fault happens, all system wiring should be re-checked to ensure the incoming hot and and/or neutral wires are not able to be connected to the AC output.


5.0 Operation

FAULT !FetOvrld

FetOvrld appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-20, FET Overload Fault

Dead Bat appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.FAULT !

Dead Bat

Figure 5-19, Dead Battery Charge Fault

• Dead Battery Charge Fault – This fault has detected a very discharged battery bank, or a battery bank not connected to the inverter. The unit is attempting to enter the Charge mode, but has detected less than 9 volts (12-volt models), 18 volts (for 24-volt models), or 36 volts (for 48-volt models) on the battery bank.

Remedy: Check the DC voltage on the inverter’s DC terminals and compare it with the DC voltage on the battery bank. These two voltages should be very close (<0.5 VDC difference). If not, check to ensure all connections are tight and the fuse/circuit breaker between the inverter and battery bank is good.This fault automatically clears when the voltage is greater than 12.6 volts (12-volt models), 25.2 volts (24-volt models), or 50.4 volts (48-volt models) as detected by the inverter.

Brk Trip appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-18, Breaker Tripped Fault

FAULT !Brk Trip

• Breaker Tripped Fault – The inverter has detected that the AC input circuit breaker (CB3) on the inverter/charger has opened due to excess current fl ow through the inverter to the AC loads.

Remedy: After reducing the AC loads, push in the inverter’s AC input circuit breaker to reset and resume operation.

Info: While in Charger mode, the inverter’s AC input breaker could nuisance trip if the loads on the inverter’s AC HOT OUT 1 exceed the current rating of this circuit breaker.


5.0 Operation

• FET Overload Fault – The inverter/charger has shut down because the internal FETs (Field Effect Transistors) have quickly exceeded a safe operating temperature. Once the FETs have cooled, perform a manual restart.

Remedy: If the fault continues to occur, disconnect all the inverter’s AC output wires and reset the inverter (see Section 6.2). If this fault does not clear after doing a reset, the inverter may require service.

Figure 5-21, High Battery Fault

FAULT !High Bat

High Bat appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

• High Battery Fault – The inverter turned off because the battery voltage is above the High Battery Cut-Out (HBCO) value. The inverter automatically restarts and resumes operation when the battery voltage drops 0.3 VDC (12-volt models), 0.6 VDC (24-volt models), or 1.2 VDC (48-volt models) below the HBCO value. The HBCO value is dependent on your inverter revision and model.

Remedy: This fault usually occurs when an external DC source is charging the inverter’s battery bank. Turn off any other additional charging source to allow the DC voltage level to drop.

HiBaTemp appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-22, High Battery Temp Fault

• High Battery Temp Fault – This fault message indicates the inverter/charger has shut down because the Battery Temperature Sensor (BTS) has reached a temperature greater than 54°C/129°F.

Remedy: Once the BTS cools down (≤49°C/120°F), it automatically restarts and continues operation. As a precaution, check the BTS location; if placed on a battery, ensure they are not overheated, or that the BTS has not been placed in a hot area or near a hot de-vice. If neither of these are the issue, then monitor the BTS display under the TECH: Bat Temp menu—this reading should be above 54°C/129°F. Now remove the BTS from the inverter’s BTS port. If the BTS reading goes to 25°C/77°F, replace the BTS. If the reading does not go to 25°C/77°F, then inspect the BTS port for cleanliness and/or have the inverter/charger serviced.

FAULT !HiBaTemp


5.0 Operation

Low Batt appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-24, Low Battery Fault

• Low Battery Fault – The inverter turns off to prevent the batteries from being over-discharged. The FAULT LED illuminates when the battery voltage drops below the LBCO setting for >1 minute. The inverter automatically restarts and resumes operation when the battery voltage rises to ≥12.5 VDC (12v models), ≥25.0 VDC (24v models), or ≥50.0 VDC (48v models).

Remedy: This fault will also automatically restart if AC power (such as utility/shorepower or a generator) is connected to the inverter/charger’s input and battery charging begins.

FAULT !Low Batt

• No Comm – Remote is not receiving any information from the inverter.

Remedy: Reset the remote by disconnecting the remote commu-nications cable from the inverter for 5 seconds, and then reconnect it (see Figure 2-3). If the fault continues, fi rst check/replace the remote cable. This cable is 4-wire telephone cable.

Figure 5-25, No Communication

FAULT !No Comm

No Comm appears on the LCD. FAULT (red) LED is off. INV (green) LED may be off or on. Ignore the INV LED.

• High Volts AC Fault – Charger is disabled due to a very high AC voltage (>150 VAC, >260 VAC – export models) detected on the AC input.

Remedy: Remove all AC power from the inverter’s AC input for at least 15 minutes to automatically restart this fault. Ensure only 120 VAC power is connected to each of the inverter’s AC inputs. Check and correct the high voltage problem from the source.

FAULT !High VAC

High VAC appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-23, High Volts AC Fault


5.0 Operation

• DC Overload Fault – The inverter shuts down to protect internal power components from an excessive AC load. If the overload condition lasts for less than 10 seconds, the unit automatically restarts and resumes operation. However, if the overcurrent condition occurs for more than 10 seconds, the unit shuts down and requires a manual restart.

Remedy: This fault occurs because: the connected AC loads ex-ceed the inverter’s output capacity, there is a wiring short on the AC output, or the wires are incorrectly installed. Once the AC loads are reduced or the output wiring is corrected, manually restart the inverter. If this fault continues after all these recommendations, perform an inverter reset (see Section 6.2).

OvrCurnt appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

FAULT !OvrCurnt

Figure 5-26, Overcurrent Fault

What if the cable is not the issue?• Try another remote display.• Disconnect the remote from the Remote port and connect to the Net-

work port.• The inverter might need servicing.

Figure 5-27, Overtemp Fault

FAULT !Overtemp

Overtemp appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

• Overtemp Fault – The inverter/charger has shut down because the internal power components (FETs and/or transformer) have exceeded their safe temperature operating range. Once the unit cools down it automatically restarts and continues operation.

Remedy: If the fault occurs while inverting, reduce the load on the inverter. If it occurs while charging, turn down the charge rate. If this fault happens often, ensure the inverter is not in a hot area, has proper ventilation, and the cooling fans inside the inverter are working.


5.0 Operation

• Unknown Fault – When a number appears in the second line of the remote it means the remote doesn’t know what fault the inverter is reporting.Contact Magnum Technical Support for assistance with this fault.

Figure 5-30, Unknown Fault

FAULT !Fault XX

FAULT !TfmrTemp

Fault XX appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

TfmrTemp appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-29, Tfmr Overtemp Fault

• Transformer Overtemp Fault – This fault message is displayed when the TCO (Temperature Cut-Out) opens and causes the inverter to shut down to protect the internal power transformer from damage. When the TCO has cooled down, the inverter will automatically restart and resume operation.

Remedy: If this fault occurs while inverting, reduce the load on the inverter. If it occurs while charging, turn down the charge rate. If it occurs often, ensure the inverter is in a cool location, has adequate ventilation, and the internal cooling fans are operational.

FAULT !StkRelay

StkRelay appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-28, Stuck Relay Fault

• Stuck Relay Fault – This fault message displays when the internal AC pass-thru relay—that should be open while inverting—is closed.

Remedy: The AC pass-thru relay is most likely stuck because of damage to the contacts from trying to handle currents greater than their rating. This is usually caused by not protecting the relay from handling high continuous currents, or by switching high current inductive loads. The internal relay contacts are rated to handle 30 amps AC continuously and should be protected with a breaker sized no larger than 30 amps. If you are connected to an AC source (grid or generator) and running large inductive loads (i.e., pumps, motors, etc.,) on the inverter output, turn those particular loads off prior to removing the AC input source. This fault requires an inverter or power reset (Sections 6.2 & 6.3) to clear.

Note: XXs are just placeholders.


5.0 Operation

5.3.3.2 Stacking Fault MessagesA fault condition may occur when multiple inverters are connected together (i.e., stacked)—that is not possible on a single inverter installation.

FAULT !Stak CLK

Stak CLK appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-31, Stack Clock Fault

StakMode appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

FAULT !StakMode

Figure 5-32, Stack Mode Fault

StckPhas appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-33, Stack Phase Fault

FAULT !StckPhas

• Stack Mode Fault – A problem with the ‘other’ stacked inverter has been detected, check that unit for a fault condition.

Remedy: This fault automatically clears when the fault with the other inverter is corrected.

• Stack Phase Fault – 1. The AC input wiring is incorrect; or, 2. One phase was lost from the AC input source; or, 3. One of the inverter’s internal transfer relays is bad; or, 4. The inverter’s AC input circuit breaker may be open.

Remedy: If this fault doesn’t clear after checking the above recom-mendations, perform an inverter reset (see Section 6.2).

• Stack Clock Fault – There is a stacker cable problem, or one inverter is losing synchronization with the other inverter.

Remedy: 1. Ensure you are using a Magnum stacking cable (this is not a telephone/data cable, it is custom made). 2. Inspect the stacker cable and reconnect at both ends (ensure you hear an au-dible “click” from the connectors at both inverters).

Info: This fault may occur when a Magnum Energy accessory is plugged into the Stack port, but the installation is not using mul-tiple inverters in a stacked confi guration. If this occurs, perform an inverter reset (see Section 6.2).


5.0 Operation

FAULT ! Bridge

Bridge appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-34, Internal Bridge Fault

5.3.3.3 Internal Fault MessagesThe inverter continually monitors several internal components. If a condition inside the inverter occurs that does not allow proper operation, the inverter shuts down to protect itself. An inverter reset is required to clear these faults.

Remedy: Perform an inverter reset (see Section 6.2). After resetting the inverter, press the ON/OFF button to turn the inverter on and to verify the fault has cleared. If the internal fault remains, the inverter may require repair at an authorized service facility.

FAULT !CHARGER

CHARGER appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-35, Internal Charger Fault

• Internal Charger Fault – The inverter shuts down because the internal charger protection circuit has been activated.

FAULT !NTC Snsr

NTC Snsr appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.

Figure 5-36, Internal NTC Sensor Fault

• Internal Bridge Fault – The inverter shuts down because the internal power-bridge protection circuit has been activated.

• Internal NTC Sensor Fault – The inverter shuts down because the internal NTC (temperature sensor) circuit has been activated.


5.0 Operation

LED Status Meaning

INV (green)

OFF 1. Inverter is disabled; or 2. Remote is in Power Saver mode – press any button to activate LEDs.

ON

Inverter is enabled – 1. Supplying AC power on the output; or 2. In Standby (a charge status displays); the inverter will automatically supply AC power to the loads if shore or generator power is lost.

BLINKING Inverter is in Search mode (the AC load is below the Search Watts setting).

FAULT (red)

OFF Normal operation.

ON A fault condition has been detected, check the LCD display to fi nd and correct the cause.

5.3.4 LED Indicator GuideThe remote provides the following LED statuses. Use them along with the LCD display to determine the inverter/charger’s operating status.

Table 5-1, LED Indicator Guide

IntRelay appears on the LCD and the FAULT (red) LED is on. The INV (green) LED is off.FAULT !

IntRelay

Figure 5-37, Internal Relay Fault

• Internal Relay Fault – The internal transfer relay is not closing even though the inverter is in Charge mode. Contact Magnum Technical Support (425-353-8833) for assistance.


6.0 Troubleshooting

6.0 TroubleshootingIf the remote is not functioning correctly, use the following table to help fi nd a solution.

Table 6-1, Remote Troubleshooting

Symptom Possible Cause Solution

Display showsunrecognizableletters orsymbols.

Static electricitymay have beendischarged into theLCD display.

Refresh display: Press andhold the MENU/HOME button for 10 seconds.

The LCD text display is locked-up, pressing any button has no response - may show “revision” or “connecting”.

The RJ11 connections on the communication cable are not making a good connection.

Reset remote: 1) disconnect the remote cable from the inverter for 5 seconds and then reconnect; 2) check RJ11 cable connection on back of the remote (see Figure 2-2).Important: Ensure the RJ11 connector is pushed into the correct port. You should feel/hear “click” when the connection is made.

The remote is not getting suffi cient power from the inverter.

Ensure the inverter batteries are connected and the inverter is operating correctly. The inverter should be able to invert and power AC loads from the batteries (ensure no AC power is connected to the inverter’s AC inputs).

The LEDs and the backlight are off.

The remote is in Power Saver mode.

Press any button to reactivate the remote (or turn the Power Saver setting to Off).

The remote is non-functional (no lights, no text on LCD display, and no response when pressing any button).

The communication cable is bad or not correctly connected to the Remote port on the inverter.

Check the communications cable from the inverter to remote; ensure: 1) it is connected to the Remote port, 2) the correct communications cable is used (a 4-conductor telephone cable may be substituted to determine if cable is good).

Inverter is not connected to batteries.

Ensure inverter batteries are connected and the inverter is operating correctly without any AC power connected (should be able to invert and power AC loads from batteries).


6.0 Troubleshooting

6.1 Troubleshooting Tips6.1.1 Inverter Problems:• Inverter turned on, the INV LED on the remote is blinking, no output: Inverter is in Search mode. Either defeat Search mode—if not needed—or turn on loads greater than the Search Watts setting.

6.1.2 Charger Problems:• Unit won’t transfer to Charge mode with AC applied: Measure the input AC voltage, it should be 120VAC +/- 20 VAC, (export models: 230 VAC +/- 40 VAC). Also, check that the VAC Dropout setting on the remote is 80 VAC (150 VAC for export models) or less.

• Transfer relay closes, and then opens and continues to cycle: AC voltage is too low, or has transients that drop the AC voltage momentarily. Change the VAC Dropout setting to 60 VAC and check for improvements. If the cycling continues, back off the Charge Rate setting from 100% to 10%.This cycling may also occur if the AC output of the inverter is connected to the inverter’s AC input—check for proper input and output AC wiring. Check the remote for indication of a fault.

• Charger not charging even though the remote says “Charging”: Full charge rates are not obtained in Charge status, only after this mode changes to “Bulk”, “Absorb,” or “Float”.

• Charger not charging even though the remote says “Bulk” (or “Absorb”): Check the DC amps meter and the DC voltmeter on the ME-MR display. It should be 80% or more of rated charge current if the battery voltage is under 14.0 VDC (28.0 VDC on 24-volt models or 48.0 VDC for 48-volt models). If not, check the Charge Rate setting and verify the setting is 80% or greater. Still low charge rate? Check the AC IN setting to verify the setting. If no AC loads are being passed through the inverter, the AC IN setting must be 15 amps (25 amps for 3kW unit) or greater, to receive a full charge rate.

• Remote displays “Float” not “Bulk” when the AC is fi rst plugged in: Check DC volts on the ME-MR display, if the battery is over 13.0 VDC (26.0 VDC for 24-volt models or 52.0 VDC for 48-volt models) then the battery was already charged and the charger automatically goes to Float Charging to keep from overcharging the batteries.

• Charge amps are lower than expected, or is 0 amps DC: Measure input AC voltage and increase if the input voltage is under 90 VAC. The charge rate is reduced to try and keep the input voltage above 90 VAC; also check the AC IN and Charge Rate settings to determine if the current is being limited.

• Charger output voltage is higher than expected: Check the Battery Temperature Sensor (BTS) temperature. If the BTS is installed, the charge voltage settings will increase if the temperature around the BTS is below 77° F (25° C), and decrease if the temperature around the BTS is higher than 77° F (25° C).


6.0 Troubleshooting

6.3 Performing a Power ResetTo perform a power reset (i.e., hard reset):1. Remove all AC power (utility or generator power) to the inverter.2. Open all the inverter DC disconnects (or disconnect the positive battery

cable to the inverter).3. Ensure the inverter and the remote are disconnected from all AC and DC

power (the remote display will be blank).4. After the inverter has been disconnected from all power for 30 seconds,

reconnect the inverter disconnects (or reconnect the positive battery cable) and resume operation.

Info: If DC disconnects are not used, there may be a momentary spark when the positive battery cable is connected to the inverter’s terminal. This is normal and indicates that the inverter’s internal capacitors are being charged.

6.2 Performing an Inverter ResetTo perform an inverter reset (i.e., soft reset):1. Remove all AC power (utility or generator power) to the inverter. 2. Press and hold the inverter’s Power ON/OFF pushbutton (see Figure 6-1)

for approximately 15 seconds until the Charging/Inverting Status LED comes on and fl ashes rapidly.

3. Once the rapid fl ashing has begun, release the Power ON/OFF pushbutton. The Status LED will go off after the pushbutton is released.

4. Press the Power ON/OFF pushbutton to turn on the inverter.Some older inverter models do not allow an inverter reset. If the inverter reset fails, perform a power reset using the procedure below. In either case, if an internal fault does not clear the inverter will require repair at a Magnum Authorized Service Center (ASC).

Info: The Power ON/OFF pushbutton is a small momentary type switch which operates by lightly pressing and releasing.

Info: All adjustable inverter/charger settings in the ME-MR are saved in non-volatile memory and are preserved until changed—even if an inverter reset is performed, or if all power to the remote or inverter is removed.

Figure 6-1, Performing an Inverter Reset

2. Press and hold the Power ON/OFF pushbutton for 15 seconds.

3. Watch the Charging/Inverting Status LED, after approximately 15 seconds it should come on and flash rapidly to indicate the inverter has reset. The Status LED will go off after the pushbutton is released.

1. Ensure all AC power (i.e., shorepower or generator) is removed from the inverter’s input.


7.0 Warranty and Service Info

7.0 Warranty and Service Information

7.1 Limited WarrantyMagnum Energy, Inc., (hereafter “Magnum”) warrants the ME-MR remote con-trol to be free from defects in material and workmanship that result in product failure during normal usage, according to the following terms and conditions:1. The limited warranty for this product extends for a maximum of 12 months

from the product’s original date of purchase.

2. The limited warranty extends to the original purchaser of the product and is not assignable or transferable to any subsequent purchaser.

3. During the limited warranty period, Magnum will repair, or replace at Magnum’s option, any defective parts, or any parts that will not prop-erly operate for their intended use with factory new or remanufactured replacement items if such repair or replacement is needed because of product malfunction or failure during normal usage. The limited warranty does not cover defects in appearance (whether cosmetic or decorative), or any structural or non-operative parts. Magnum’s limit of liability under the limited warranty shall be the actual cash value of the product at the time the original purchaser returns the product for repair, determined by the price paid by the original purchaser. Magnum Energy shall not be liable for any other losses or damages.

4. Upon request from Magnum, the original purchaser must prove the prod-uct’s original date of purchase by a dated bill of sale, itemized receipt.

5. The original purchaser shall return the product prepaid to Magnum in Everett, WA. After the completion of service under this limited warranty, Magnum will return the product prepaid to the original purchaser via a Magnum-selected non-expedited surface freight within the contiguous United States and Canada; this excludes Alaska and Hawaii.

6. If Magnum repairs or replaces a product, its warranty continues for the remaining portion of the original warranty period or 90 days from the date of the return shipment to the original purchaser, whichever is greater. All replaced products and parts removed from repaired products become the property of Magnum.

7. This limited warranty is voided if:

• the product has been modifi ed without authorization

• the serial number has been altered or removed

• the product has been damaged through abuse, neglect, accident, high voltage or corrosion

• the product was not installed and operated according to the owner’s manual

BEFORE RETURNING ANY UNIT, A RETURN MATERIAL AUTHORIZATION (RMA) NUMBER IS REQUIRED


7.0 Warranty and Service Info

7.1.1 How to Receive Repair ServiceIf your product requires warranty service or repair, contact either:

• An authorized service center, as listed at:http://www.magnumenergy.com/Service/ServiceCenters-US.htm, or

• Magnum Energy, Inc. at:Telephone: 425-353-8833Fax: 425-353-8390Email: [email protected]

If returning your product directly to Magnum for repair, you must:

1. Return the unit in the original, or equivalent, shipping container.2. Receive a Return Materials Authorization (RMA) number from the factory.3. Prior to the return of the product to Magnum for repair, place the RMA

number clearly on the shipping container or on the packing slip.

When sending your product for service, please ensure it is properly packaged. Damage due to inadequate packaging is not covered under warranty. We recommend sending the product by traceable or insured service.

Magnum Energy, Inc.2211 West Casino Rd.

Everett, WA 98204Phone: (425) 353-8833Fax: (425) 353-8390

Web: www.magnumenergy.com

PN: 64-0031 Rev D

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